#!/bin/bash
#function: add mysql master and slave  config for mysql 5.6  rpm 
#parmeter:
#author: yeslf 
#version: 1.0
#Test: CentOS 6 


function  addconfig()
{
mkdir /var/log/mysql
chown mysql:mysql /var/log/mysql

cat >/etc/my.cnf<</
#
# The MySQL database server configuration file.
# CentOS6 MySQL 5.6 
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html


# This will be passed to all mysql clients
[client]
port=3306
socket=/var/lib/mysql/mysql.sock

# Here is entries for some specific programs
# The following values assume you have at least 32M ram

# This was formally known as [safe_mysqld]. Both versions are currently parsed.
[mysqld_safe]
socket=/var/lib/mysql/mysql.sock
nice=0

[mysqld]
#
# * Basic Settings
#
user=mysql
pid-file=/var/lib/mysql/mysqld.pid
socket=/var/lib/mysql/mysql.sock
port=3306
basedir=/usr
datadir=/var/lib/mysql
tmpdir=/tmp
lc-messages=en_US
lc-messages-dir=/usr/share/mysql

#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address=*
#
# * Fine Tuning
#
#key_buffer        = 16M
#max_allowed_packet    = 16M
#thread_stack        = 192K
#thread_cache_size       = 8
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
#max_connections        = 100
#table_cache            = 64
#thread_concurrency     = 10
#
# * Query Cache Configuration
#
#query_cache_limit    = 1M
#query_cache_size        = 16M
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.

# As of 5.1 you can enable the log at runtime!
#general_log_file=/var/log/mysql/mysql.log
#general_log=1
#
# Error log - should be very few entries.
#
log_error=/var/log/mysql/error.log

#
# Here you can see queries with especially long duration
#log_slow_queries    = /var/log/mysql/mysql-slow.log
#long_query_time = 2
#log-queries-not-using-indexes
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
#       other settings you may need to change.
#server-id=
#log_bin=/var/log/mysql/mysql-bin.log
#sync-binlog=1 
#expire_logs_days    = 10
#max_binlog_size         = 100M
#binlog-do-db        = include_database_name 如果涉及多个值就多设置几个 binlog-do-db，
                                             #每行指定一个
#binlog-ignore-db    = include_database_name 如果涉及多个值就多设置几个

#skip-slave-start

#
# * InnoDB
#
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more InnoDB related options. There are many!



# * Security Features
#
# Read the manual, too, if you want chroot!
# chroot = /var/lib/mysql/
#
# For generating SSL certificates I recommend the OpenSSL GUI "tinyca".
#
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem



[mysqldump]
quick
quote-names
max_allowed_packet    = 16M

[mysql]
#no-auto-rehash    # faster start of mysql but no tab completition

[isamchk]
key_buffer        = 16M

#
# * IMPORTANT: Additional settings that can override those from this file!
#   The files must end with '.cnf', otherwise they'll be ignored.
#
#!includedir /etc/mysql/conf.d/

/

echo "config "
}


function configmaster()
{
service mysql stop 
addconfig
echo " add config finish "
echo "config master "

read -p "input server ID " serverid
sed -i  "s/#server-id=/server-id=$serverid/" /etc/my.cnf
sed -i "s/#log_bin=/log_bin=/" /etc/my.cnf
sed -i "s/#sync-binlog=/sync-binlog=/" /etc/my.cnf

service mysql restart 

read -p "input mysql root password " roootpassword

mysql -u root -p$roootpassword  -e "create user forrelay@'%' identified by 'abc123' ; \
grant Replication client ,Replication slave on *.* to forrelay@'%';flush privileges; \
show master status \G;"


}

function configslave()
{
service mysql stop
addconfig
echo " add config finish "
echo "config slave "
read -p "input server ID " serverid
sed -i  "s/#server-id=/server-id=$serverid/" /etc/my.cnf
sed -i  "s/#skip-slave-start/skip-slave-start/" /etc/my.cnf

service mysql restart 
read -p "input mysql root password " roootpassword
read -p "input mysql mster host " masterhost
read -p "input mysql mster user " masteruser
read -p "input mysql mster user password " masteruserpass
read -p "input mysql mster logfile " masterlogfile
read -p "input mysql mster logpost " masterlogpos


mysql -u root -p$roootpassword  -e "create user forrelay@'%' identified by 'abc123' ; 
grant Replication client ,Replication slave on *.* to forrelay@'%';flush privileges; 
CHANGE MASTER TO
  MASTER_HOST='$masterhost',
  MASTER_USER='$masteruser',
  MASTER_PASSWORD='$masteruserpass',
  MASTER_LOG_FILE='$masterlogfile',
  MASTER_LOG_POS=$masterlogpos,
  MASTER_CONNECT_RETRY=10;
start slave ;  show slave status \G; 
"

}

read -p "config master 0 or  slave 1" configmasterslave


if [ $configmasterslave == 0 ]
then
    configmaster
    
elif [ $configmasterslave == 1 ]
then 
    configslave
else
    echo "input is error "
    
fi


